Sahih Muslim Book 1, Hadith Number 407.

Chapter : Regarding the words of Allah: “And warn thy nearest kindred”.

This hadith was narrated by A’mash on the authority of the same chain of narrators and he said: One day the Messenger of Allah (may peace be upon him) climbed the hill of Safa’ and said: Be on your guard, and the rest of the hadith was narrated like the hadith transmitted by Usama; he made no mention of the revelation of the verse: “Warn thy nearest kindred.”